The evidence against George Zimmerman includes photos of Martin's bloodied sweatshirt and separate hoodie with a single bullet hole.

According to the documents, scientists noted a layer of soot around the bullet hole as clear evidence he was shot at very close range – something Zimmerman claims was necessary to save his own life during an altercation with Martin.

In most of the calls, Zimmerman speaks in a matter of fact tone about a suspicious man picking through garbage or a garage door left open. But on the rainy night of his encounter with Martin, Zimmerman sounds more urgent.

Sanford's lead detective concluded that Zimmerman targeted Martin not by race, but as a criminal based on the clothing he was wearing.

In a federal investigation, none of the people interviewed by the FBI in their civil rights investigation said that Zimmerman showed racial bias.

A Casselberry gun store employee told authorities that when Zimmerman bought the gun ultimately used to kill Martin, Zimmerman told him he was buying it for protection. The employee told FBI agents that Zimmerman never made any derogatory racial comments.

Federal agents also interviewed Zimmerman's former neighbor. The neighbor called Zimmerman "culturally rounded."